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Mastering PostgreSQL 15 - Fifth Edition

You're reading from Mastering PostgreSQL 15 - Fifth Edition

Product type Book

Published in Jan 2023

Publisher Packt

ISBN-13 9781803248349

Pages 522 pages

Edition 5th Edition

Languages

Concepts

Robotic Process Automation

Author (1):

Hans-Jürgen Schönig

Table of Contents (16) Chapters

Preface

1. Chapter 1: PostgreSQL 15 Overview

2. Chapter 2: Understanding Transactions and Locking

3. Chapter 3: Making Use of Indexes

4. Chapter 4: Handling Advanced SQL

5. Chapter 5: Log Files and System Statistics

6. Chapter 6: Optimizing Queries for Good Performance

7. Chapter 7: Writing Stored Procedures

8. Chapter 8: Managing PostgreSQL Security

9. Chapter 9: Handling Backup and Recovery

10. Chapter 10: Making Sense of Backups and Replication

11. Chapter 11: Deciding on Useful Extensions

12. Chapter 12: Troubleshooting PostgreSQL

13. Chapter 13: Migrating to PostgreSQL

14. Index

Why subscribe?

15. Other Books You May Enjoy

Understanding developer-related features

Administration-related features are not everything. PostgreSQL 15 also provides some developer-related features that are useful to build even more powerful applications. In this section, you will learn which ones are available.

Security invoker views

In PostgreSQL, a view is a separate security context. It might happen that somebody is allowed to access a view but not the underlying table. Why does this matter? Consider the following scenario:

Joe is allowed to see all sales
Jane is only allowed to see total turnover by country

Jane will be granted rights on a view that sums up the data. She will be able to read that view without having the right to read the sales table directly.

However, in PostgreSQL, it is now possible to make PostgreSQL treat the view more like a preprocessor directive. By setting security_invoker, it will also check the underlying tables and not treat the view as a separate security context anymore...

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Authors (1)

Hans-Jürgen Schönig

Hans-Jürgen Schönig has 20 years' experience with PostgreSQL. He is the CEO of a PostgreSQL consulting and support company called CYBERTEC PostgreSQL International GmbH. It has successfully served countless customers around the globe. Before founding CYBERTEC PostgreSQL International GmbH in 2000, he worked as a database developer at a private research company that focused on the Austrian labor market, where he primarily worked on data mining and forecast models. He has also written several books about PostgreSQL.

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